Ventilator.



R. W. BURNETT. VENTILATOR. APPLIOATION FILED AUG. z5. 1911.

Patented N 0V. 24, 1914.

u mams PETERS C11. FHOm-LITHD., WASHINGTON. D, c.

of my improved combined ventilator and hatch arrangedfor'ventilation; Fig.. 2 is a f similar view to Fig. 1, and illustrating vthe unirnn ysrrafrns PATENT ormoni.

RICHARD WEBB BURNETT, OF MONTREAL, QUEBEC, CANADA.

VENTILATOR.

T0 all whom it may concern:

Be it known that I, RICHARD WEBB BUR- NETT, residing at the city of Montreal, Province of Quebec, Dominion of Canada, have invented certain new and useful Improvements in Ventilators; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to ventilators for refrigerator cars, and more particularly to the ventilators of the type combined with the hatch through which the ice is loaded, but it is applicable to cars of all types.

The object of my invention is to provide a ventilator within the height required for track clearance, and which will be cinder'- proof, and simple and inexpensive to construct; and to this end the invention may be said briefly to consist .of a three sided rectangular rim or flange projecting above three sides of the hatch, the non-flanged side being toward the end of they car, and a cover hinged to the flange toward the middle of the car, andhaving side flanges overlapping the corresponding flanges of the rim. A sealingmember and a ventilating member being both carried by the cover, and adapted to, at different times, close the open side of the rim.

For full comprehension, however, of my invention, reference` must be had to the accompanying drawings, in which similar reference characters indicate .the same parts, and wherein.:

Figure 1 is a longitudinal sectional view device closed; Fig. 3 yis a part front elevation and vpart transverse vertical sectional view, drawn to a larger scale, of my improved combined ventilator and hatch arranged forA Ventilating; andFig-4 isa detail view illustrating the lating member removed.

The car illustrated is an ordinary box car yhaving hatchesin its roof for charging with ice and for use for ventilation when desired. One of the hatches is illustrated Y at 2 and it is provided with four inclosing wooden walls'3. For the purpose of my invention I cut down the wall nearestthe end of the car. Three sides of this hatch wall are inclosed by a steel plate bent to present three flanges 5, 6 and 7, kand end abutment flanges or jambs 8 overlapping the ends of the previous Lor ventiy ySpecification of Letters Patent. Patented N0V 24,1914L Application mea August 25, 1911. 'i

Serial No. 646,008.

fourth side, such plate being flanged at its lower edge as at 10, and fastened thereby to the car roof. This plate constitutes the base of my appliance. The cover also consists of sheet steel, and hasa top 15 and tainwardly toform abutment iianges or iambs 21 similar to the abutment flanges or )ambs 8 of the base. .A closure flange or door 23 adapted to fit tightly against theV jambs 21, is hinged to the free edge ofthe cover, and seals the cover when shut down. A hasp 25 serves to lock the cover down and the sealing door in effective position, as

shown at the left in Fig. 1. A ventilator l door is also hinged to the freevedge of the ycover just inside of the sealing door, and it is adapted to it against and inside of the Jambs 8 of the base, andrest upon the roof,

and a hasp 30 affords means for locking this door andthe coverl in Ventilating position, as shown atthe 'left in Fig. 1 and turnedup with the screen in Fig. 2.

Theven'tilating sections or members heretO'forel used rwere defective in that they- ,fa'iled to keep outthe fine cinder particles,

and I have solved this` problem by making my ventilator member of an 'oblong rectangulai` frame 35, having wire netting `of comparatively coarse mesh .secured as at 36 and 37 to the opposite sides thereof, the outer sheet 36 being of less depth than thel inner which inner sheet extends completely across the frame thus protecting the `entire openingl therethrough; the purpose being -toprovidev4 y'a spacealong they lower edge of the outer netting to permit'cinders and other dirt which happens to pass through the outer nettingand stopped by the inner netting to roll out Ionto'the roof. And T have discovered that with'spaced sheets of netting, a coarse ymesh maybe used even more effectively. in

so far as keeping out the smaller foreign particles 'is concerned, than finer material,

for the reason that the outer sheet breaks their force and those that pass are' falling when they strike the inner sheet, and consequently do not pass it.

Iny Fig. 2 my combined ventilator and tions.

ing the hatch as when ventilation is not required, and in Fig. 1 the appliance is shown with the screen set for Ventilating, and the sheet metal door 9.3 thrown back in full lines and dotted in position acting as a valve reducing the ventilation areamy improved appliance being shoiyn in Fig. 3 arranged for ventilation to its full capacity the sheet metal door being thrown back and resting on the top of the cover.

This combination ventilator and hatch cover is of minimum height as either a sealing cover or ventilator', and effective for either use. rllhe cover is hinged in place, and the entrance of sparks at the hinged end when sealed or used, for ventilation, is prevented by taking up the slack necessary between .the hinged end of the cover and the base or mouth of the hatch, to enable the cover to be set in different angular posi- This is done by a curved plate 50 attached permanently to the flange G and having sufficient spring to follow the cover to its full ventilating position thus embracing the hinge and constituting a spark arresting seal' at this point. The plate is preferably as before mentioned fastened directly to the flange 6 of the base, and a series of hinge knuckles 51 are mounted thereon, the other hinge knuckles 52 being formed on the flange 20 vof the cover and they are supple mented by lugs 53 while the whole of the hinge structure isbraced by a pair of relatively -heavy lugs 54: fastened to the roof of the car.

The curved plate 50 fits snugly at its side edges against the interior of the side edges of the, Acover with its free edge abutting against the inside of theiiiange 20; and when the cover is moved to different ventilating positions, the natural resiliency of the plate causes it to follow the flange 20 and keep in bearing relation therewith, thus preventing the entry of sparks or other particles.

In order to use the hatch for a ventilator the coveris lifted sufficiently to allow the screen to drop to the position shown in Fig. 1, and the pin 800 is drawn out; andwhen `it is desired to close the cover down tightly it is lifted .the screen swung backto the position shown in Fig. 2 and the pin 300 is again inserted thus holding it in position.

Although 1 have illustrated and described the cover, which is the principal feature of my invention, attached to a metallic base dis tinct from the mouth of the hatch, such cover may be made to co-act directly with the mouth of the hatch if the latter is of suitable construction; and the particular construction of screen with spaced sheets of screening material may khe Iapplied to other ventilating uses without departing from the spirit of my invention. Furthermore the spark and dust arresting plate 50 may be 'used in connection with any car door where leakage is likely to occur, within the scope of my invention.

What I claim is as follows 1. 1n a car the combination with an ice `loading hatch, of a combined sealing and Asition, and the screen being constructed to individually support the cover in ventilating position.

2. 1n a car the combination with a hatch,

flanges encircling all sides of the hatch eX- cepting one side, of a cover hinged adjacent to the flange opposite the nonlflanged side and having iianges for engagement with the side flanges of the hatch, and an impervious door and a screen door both hinged to the cover at the free edge thereof, and each adapted to extend across the said nonrlanged side of the hatch, the impervious door being constructed to support the cover in sealing position and the screen doory being constructed to support the cover in ventilating position.

8. 1n a refrigerator car the combination with the roof of a combination hatch cover and ventilator consisting of the hatch having vertical flanges at three sides and one side non-fianged, a cover for the hatch hinged adjacent to the side thereof opposite to the non-flanged side, an impervious door hinged to the cover at the free edge thereof and approximately equal in length to the non-flanged side ofthe' hatch, a screen secured to the free edge of the cover inside of the impervious door, mea-ns for locking impervious door in position closing the said non-flanged side of the hatch, and means for locking the said screen vdoor across the said non-flanged side of the hatch.l

4L. 1n a refrigerator car the combination with the' roof of a combination hatch cover and ventilator consisting of the hatch having vertical anges at three sides and one side non-flanged, a cover for the hatch hinged adjacent to the side thereof opposite to the non-flanged side, an impervious door hinged to the cover at the free edge thereof and approXimately equal in depth to the flanges of the hatch, a screen also hinged to the free edge of the cover inside of the impervious cover and ventilator consisting of a base having three closed sides and one open side, a cover for the base hinged and adjacent to the side thereof opposite to the open side, an impervious door hinged to the free edge of the cover and approximately equal in said base and the cover and arresting any depth to the base, a screen door also hinged sparks which might pass through the hinge.

to ther free edge of the cover inside of the In testimony whereof I have signed my impervious door, means for locking the imname to this speciication in the presence of 5 perviofus dopr in positionvcloslilng the open two witnesses.

si e o the rame, means attac in the free edge of the screen door to the coer, means RICHARD WEBB BURNETT' for locking the said screen door across the Witnesses:

said Open side of the base, and a resilient GORDON G. COOKE, 10 plate fastened to the base and between the M. E. COoNs.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents. l

Washington, D. C. 

